20732330 has 8 divisors (see below), whose sum is σ = 37318212. Its totient is φ = 8292928.

The previous prime is 20732329. The next prime is 20732339. The reversal of 20732330 is 3323702.

It can be written as a sum of positive squares in 2 ways, for example, as 20675209 + 57121 = 4547^2 + 239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20732339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036607 + ... + 1036626.

Almost surely, 2^20732330 is an apocalyptic number.

20732330 is a deficient number, since it is larger than the sum of its proper divisors (16585882).

20732330 is a wasteful number, since it uses less digits than its factorization.

20732330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073240.

The product of its (nonzero) digits is 756, while the sum is 20.

The square root of 20732330 is about 4553.2768420117. The cubic root of 20732330 is about 274.7152093041.

The spelling of 20732330 in words is "twenty million, seven hundred thirty-two thousand, three hundred thirty".